{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{6}{c}}
\toprule
            &\multicolumn{2}{c}{\specialcell{Contemporaneous\\Effect (t)}}&\multicolumn{2}{c}{\specialcell{One Year\\Later (t+1)}}&\multicolumn{2}{c}{\specialcell{Previous Year\\(Placebo) (t-1)}}\\\cmidrule(lr){2-3}\cmidrule(lr){4-5}\cmidrule(lr){6-7}
            &\multicolumn{1}{c}{\specialcell{Number\\(1)}}&\multicolumn{1}{c}{\specialcell{IHS\\(2)}}&\multicolumn{1}{c}{\specialcell{Number\\(3)}}&\multicolumn{1}{c}{\specialcell{IHS\\(4)}}&\multicolumn{1}{c}{\specialcell{Number\\(5)}}&\multicolumn{1}{c}{\specialcell{IHS\\(6)}}\\
\midrule
\input{mpCosponPartyA} \vspace{-1.2em} \\ & (3.6) & (.068) & (4.7) & (.12) & (3.8) & (.086) \\ & [.69] & [.42] & [.035]** & [.12] & [.24] & [.21] \\ & \{.69\} & \{.48\} &  \{.037\}** & \{.095\}* & \{.31\} & \{.32\} \\ & <.53> & <.38> & <.16> & <.21> & & \\ \\[-5pt] \hline Observations & 1420 & 1420 & 941 & 941 & 946 & 946 \\ Session $\times$ Party $\times$ Strata FE & Y & Y & Y & Y & Y & Y \\ Outcome Mean & 82 & 4.7 & 83 & 4.5 & 76 & 4.5 \\ Outcome S.d. & 76 & 1.1 & 82 & 1.3 & 73 & 1.2 \\ \toprule \multicolumn{7}{p{16cm}}{\footnotesize \textit{Notes:} Number is the total number of co-sponsorship links between the MP and any other-party MP in a given session. IHS is the inverse hyperbolic sine transformation of Number. Proportion Other-Party Neighbor is the proportion of left-right seating neighbors from a different party. MP-clustered standard errors are in parentheses and p-values are in square brackets. Randomization inference p-values (1000 draws) are in curly brackets. Special sessions and a short session (2017) are excluded. For lead and lag specifications, sessions are also dropped where lead/lag would be a special/short session or a session in a different parliamentary term. Strata FE is a dummy variable for whether MP was pre-assigned a seat. *** p<0.01, ** p<0.05, * p<0.1.} \\ \end{tabular} }
